WO2004098969A1 - Dispositif de dessiccation d'air pour circuit de freinage pneumatique de vehicules - Google Patents

Dispositif de dessiccation d'air pour circuit de freinage pneumatique de vehicules Download PDF

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Publication number
WO2004098969A1
WO2004098969A1 PCT/KR2004/000628 KR2004000628W WO2004098969A1 WO 2004098969 A1 WO2004098969 A1 WO 2004098969A1 KR 2004000628 W KR2004000628 W KR 2004000628W WO 2004098969 A1 WO2004098969 A1 WO 2004098969A1
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WO
WIPO (PCT)
Prior art keywords
air
air dryer
chamber
valve
oil
Prior art date
Application number
PCT/KR2004/000628
Other languages
English (en)
Inventor
Gyeong-Jong Hong
Original Assignee
Gyeong-Jong Hong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gyeong-Jong Hong filed Critical Gyeong-Jong Hong
Publication of WO2004098969A1 publication Critical patent/WO2004098969A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/002—Air treatment devices
    • B60T17/004—Draining and drying devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption

Definitions

  • the present invention relates to an air dryer system for drying air induced into an air break system for a large-sized vehicle, and more particularly, to an air dryer system, which can effectively separate water and oil contained in compressed air, and which can allow a smooth driving of the vehicle by providing an auxiliary air dryer.
  • an air dryer system mounted on an air break system for a large-sized vehicle, such as a truck is to remove water and oil from air compressed by a compressor.
  • the air dryer system includes a valve seat part 100 having a number of valves and a chamber part 200 for removing water and oil from the compressed air.
  • a conventional air dryer system includes a filter 2 mounted on the inner surface of a chamber 1, a drying agent 3 embedded in the chamber 1 to dry air induced into an air inlet 4, a check valve 10 mounted below the drying agent 3, a pressure control screw 7 mounted on a side of an air path 5, an air flow hole 8 communicating with the air path 5, a purge valve 9 connected to the air flow hole 8, a purge control piston 12 mounted on a side of the air path 5 on which the check valve 10 is mounted, and an air backflow control part 14 mounted at the rear of the purge control piston 12.
  • the conventional air dryer system has several disadvantages in that it cannot effectively filter polluted air when air containing foreign matters such as polluted water, oil or carbon is induced into the air inlet, and in that the entire air break system can be out of order when the air dryer system cannot be operated in a normal condition due to the induction of the foreign matters.
  • the air induced through the air inlet 4 filters oil or carbon while passing the filter 2 mounted on the inner surface of the chamber 1, but if an amount of oil or carbon is accumulated, the foreign matters flow through the air path 5 without being absorbed by the filter. Moreover, in a serious case, the foreign matters flow into the control pistons ⁇ and 12, the purge valve 9, and the air backflow control part 14, and thereby, they are hindered in operation, and it may cause a fatal trouble.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide an air dryer system, which can effectively remove water and oil contained in compressed air induced into the air dryer system, and which can extend lifetime thereof by allowing oil filtered inside a chamber not to flow into an air dryer control valve system.
  • Another object of the present invention is to provide an air dryer system, which can prevent trouble of an air dryer required for an air break system of a large-size vehicle.
  • an air dryer system includes a main air dryer having a chamber located on the lower portion thereof and a valve seat part located on the upper portion thereof, an oil outlet formed in the lower portion of the chamber, a compressed air inlet formed in a side of the chamber of the air dryer, and an auxiliary air dryer mounted in parallel with the main air dryer by means of 2-way solenoid valves and operated by a simple switching action when the air dryer is out of order.
  • FIG. 1 is a sectional view, of a conventional air dryer system
  • FIG. 2 is a sectional view of an air dryer system according to the present invention.
  • FIGS. 3 and 4 are sectional views for showing an operation state of a governor and a purge valve of the air dryer system according to the present invention.
  • FIG. 5 is a structural view of the air dryer system according to the present invention.
  • drying agent 4 air inlet
  • check valve 12 purge control piston
  • FIG. 2 is a sectional view of the structure of an air dryer system having an oil outlet according to the present invention
  • FIGS. 3 and 4 are sectional views for showing an operation state of a governor and a purge valve of the air dryer system according to the present invention
  • FIG. 5 is a structural view of an air dryer system where air dryers are arranged in parallel according to the present invention.
  • the first characteristic of the air dryer system according to the present invention is that a valve seat part is directed upwardly and a chamber 1 is directed downwardly differently from the conventional air dryers, compressed air is induced into the side surface of the chamber, and an oil outlet 21 is formed in the lower end portion of the chamber to discharge oil.
  • the oil outlet 21 has a discharge valve 22 in order to discharge oil and water gathered in the chamber when a driver opens the valve periodically.
  • air induced into the air inlet 4 formed in the side surface of the chamber 1 coagulates oil and water contained in compressed air while being bumped against a filter frame 2a.
  • the mixed oil flows downwardly along the side wall of the filter frame 2a and is gathered on the lower portion of the chamber.
  • the remaining oil and water contained in the compressed air without coagulation flow inside the valve seat part while passing filters 2c and a drying agent 3 through a flow path 2b formed in the lower surface of the filter part, and then, are transferred to an air tank through an air path 5.
  • foreign matters such as oil and carbon contained in the compressed air are repeatedly filtered while passing through the filters 2c located at the upper and lower portions of the drying agent 3, and water contained in the compressed air is also filtered while passing through the drying agent 3.
  • the oil and foreign matters filtered by the filters 2c are gathered in the lower portion of the chamber 1, the oil gathered in the lower portion of the chamber can be discharged to the outside through the outlet 21 when the driver opens the discharge valve 22 periodically.
  • the discharge valve 22 is a solenoid valve
  • the driver who seats on a driver's seat inside a vehicle can conveniently manipulate the solenoid valve.
  • the discharge valve 22 can be automatically opened when oil of a predetermined amount is gathered.
  • the conventional air dryer gets frequently out of order because oil flows to the outside of an oil control valve when the air dryer is used for a long time.
  • the driver must discharge the oil, which is gathered in the chamber, to the outside by disassembling the air dryer one by one.
  • the air dryer according to the present invention can discharge oil at any time, the present invention can reduce a defect rate of the air dryer, and extend replacement cycle of the filters.
  • the second characteristic of the present invention is that a governor for controlling excessive pressure applied to the air dryer is mounted integrally with the valve seat part 100, so that the period for driving the purge valve with control pressure of the governor can be minimized.
  • excessive pressure applied to the air dryer occurs when the internal pressure of the air tank connected to the air path 5 of the air dryer exceeds a set value.
  • the governor senses abnormal pressure, and opens the purge valve using control pressure in order to lower the internal pressure of the air dryer.
  • the governor is not integrated with the air dryer but mounted between the air tank and a pneumatic circuit of the air dryer. Therefore, since it takes too much time to drive the purge valve 9 of the air tank using the control pressure of the governor and timing for turning off the purge valve gets late, it is difficult to maintain the internal pressure of the air dryer or the air tank uniformly.
  • the governor of the present invention is mounted integrally with the valve seat part of the air dryer, the present invention can rapidly sense the abnormal pressure of the air dryer, and minimize the period for controlling the purge valve 9, so that the internal pressure of the air dryer (or the air tank) can be maintained uniformly and a pneumatic system of an air break system can secure safety.
  • the third characteristic of the present invention is that a main air dryer and an auxiliary air driver are mounted in parallel, and a 2-way solenoid valve 23 of the air inlet channel and a 2-way solenoid valve 24 of an air outlet channel simultaneously change their directions. Therefore, when the main air dryer is out of order during driving, air can be supplied through the auxiliary air dryer by simply manipulating a switch for operating the solenoid valves 23 and 24.
  • FIG. 2 is a sectional view of the air dryer in a normal condition
  • FIG. 3 is a sectional view showing a state where the purge valve 9 is opened by the governor 20 when excessive pressure is applied to the inside of the air tank or the air dryer.
  • a piston 20b is lifted upwardly while compressing an excessive pressure control spring 20c located in the governor 20, and thereby, the chamber and a connection channel 20d are communicated with each other.
  • a piston 9b is pushed upwardly while the excessive pressure passing through the governor 20 is gathered in a space 9a formed below the purge valve 9, and thereby, a blocking plate 9c is opened.
  • the excessive pressure contained in the chamber is discharged to the air through a path 9d, and when the internal pressure of the chamber is lowered to the normal pressure, the piston 20b is lowered downwardly by restoring force of the excessive pressure control spring 20c to prevent introduction of the internal pressure of the chamber into the governor 20, and then, the connection channel 20d is closed. Furthermore, the blocking plate 9c is lowered downwardly by restoring force of the spring 9e of the purge valve 9, and then, the purge valve 9 is also closed. Since the governor 20 is in integration with the valve seat part 100 of the air dryer, the present invention can complete its operation in a short period. As a result, since the purge valve 9 is closed after the excessive pressure contained in the chamber is instantaneously discharged to the outside, the present invention can maintain the internal pressure of the air dryer uniformly.
  • the 2-way solenoid valve 23 of the air inlet channel and the 2-way solenoid valve 24 of the air outlet channel block a flow channel connected to the main air dryer 30, and at the same time, opens a flow channel connected to the auxiliary air dryer 31, so that the air dryer system can be driven normally without interruption.
  • the reference numeral 100a designates a fixing nut mounted on the valve seat part 100 for fixing the filter frame 2a, in which the drying agent 3 and the filters 2c are embedded.
  • the conventional air dryer gets frequently out of order because oil flows to the outside of an oil control valve when the air dryer is used for a long time.
  • the driver must discharge the oil gathered in the chamber by disassembling the air dryer one by one.
  • the present invention can reduce a defect rate of the air dryer, and extend replacement cycle of the filters.
  • oil filtered by the filter is not gathered in the air dryer system but discharged to the outside through the purge valve and the control valve, and then, continuously drops on the road during driving of the vehicle, and thereby, the conventional air dryer system causes environmental pollution more serious than smoke gas.
  • the air dryer system according to the present invention can solve the above problem of the conventional air dryer system, because it can store a predetermined amount of the oil filtered by the air dryer within the chamber and allow the driver to discharge the filtered oil in a gas station.
  • the air dryer system according to the present invention has the governor mounted integrally with the valve seat part 100, so that the excessive pressure inside the air dryer can be rapidly controlled, thereby providing reliability of the pneumatic circuit.
  • the air dryer system of the present invention can drive the auxiliary air dryer by the simple manipulation of the switch when the main air dryer is out of order, so that it can prevent deterioration or defect of the air dryer system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Drying Of Gases (AREA)

Abstract

La présente invention concerne un dispositif de dessiccation destiné à un système de freinage pneumatique de véhicules. Ce dispositif de dessiccation comporte un dessiccateur principal pourvu d'une chambre située sur la partie inférieure correspondante et une partie de siège de soupape située sur la partie supérieure correspondante, une sortie d'huile formée dans la partie inférieure de la chambre, une entrée d'air comprimé formée dans un côté de la chambre du dessiccateur et un dessiccateur auxiliaire qui est monté en parallèle au dessiccateur principal au moyen de robinets électromagnétiques à deux voies et qui fonctionne par le biais d'une simple action de commutation, lorsque le dessiccateur est en panne. De ce fait, ce dispositif de dessiccation peut prévenir la détérioration de l'efficacité et les accidents provoqués par une défaillance, diminuer un taux de pertes et augmenter une période de remplacement de filtres.
PCT/KR2004/000628 2003-03-24 2004-03-23 Dispositif de dessiccation d'air pour circuit de freinage pneumatique de vehicules WO2004098969A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030018181A KR100403011B1 (en) 2003-03-24 2003-03-24 Air dryer system
KR10-2003-0018181 2003-03-24

Publications (1)

Publication Number Publication Date
WO2004098969A1 true WO2004098969A1 (fr) 2004-11-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/000628 WO2004098969A1 (fr) 2003-03-24 2004-03-23 Dispositif de dessiccation d'air pour circuit de freinage pneumatique de vehicules

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KR (1) KR100403011B1 (fr)
WO (1) WO2004098969A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116313A1 (fr) * 2007-03-26 2008-10-02 Lebreux Uldege Distributeur de liquide dans un système de fluide sous pression
EP2690329A4 (fr) * 2011-03-25 2016-06-01 Nabtesco Automotive Corp Régulateur de pression et sécheur d'air
CN107387369A (zh) * 2017-08-17 2017-11-24 合肥力威汽车油泵有限公司 一种油气分离器
WO2020226568A1 (fr) * 2019-05-07 2020-11-12 R2Cd Holdings Pte. Ltd. Déshumidificateur et dispositif de détection de photo-ionisation avec fonction de déshumidification

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101278884B1 (ko) * 2011-05-12 2013-06-26 주식회사 인팩 차량용 에어 드라이어

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544385A (en) * 1983-09-13 1985-10-01 Nippon Air Brake Co., Ltd. Air dryer device for compressed air system of vehicle
US5209764A (en) * 1991-08-20 1993-05-11 Allied Signal Inc. Compressed air system with twin air dryers
JPH09271627A (ja) * 1996-04-05 1997-10-21 Nabco Ltd 圧縮空気乾燥装置における排気音の低減方法および圧縮空気乾燥装置
JPH10296038A (ja) * 1997-04-28 1998-11-10 Nabco Ltd 圧縮空気供給システムおよびエアドライヤ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544385A (en) * 1983-09-13 1985-10-01 Nippon Air Brake Co., Ltd. Air dryer device for compressed air system of vehicle
US5209764A (en) * 1991-08-20 1993-05-11 Allied Signal Inc. Compressed air system with twin air dryers
JPH09271627A (ja) * 1996-04-05 1997-10-21 Nabco Ltd 圧縮空気乾燥装置における排気音の低減方法および圧縮空気乾燥装置
JPH10296038A (ja) * 1997-04-28 1998-11-10 Nabco Ltd 圧縮空気供給システムおよびエアドライヤ

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116313A1 (fr) * 2007-03-26 2008-10-02 Lebreux Uldege Distributeur de liquide dans un système de fluide sous pression
US8371327B2 (en) 2007-03-26 2013-02-12 Productions Dr Liquid distributor in pressurized fluid system
EP2690329A4 (fr) * 2011-03-25 2016-06-01 Nabtesco Automotive Corp Régulateur de pression et sécheur d'air
US9671796B2 (en) 2011-03-25 2017-06-06 Nabtesco Automotive Corporation Pressure governor and air dryer
CN107387369A (zh) * 2017-08-17 2017-11-24 合肥力威汽车油泵有限公司 一种油气分离器
WO2020226568A1 (fr) * 2019-05-07 2020-11-12 R2Cd Holdings Pte. Ltd. Déshumidificateur et dispositif de détection de photo-ionisation avec fonction de déshumidification

Also Published As

Publication number Publication date
KR100403011B1 (en) 2003-10-23

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